Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
251,80 € ↑6,70 (2,73%)
2026-06-03
DEL PRIS
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionCaptrust Financial Advisors
Latest Disclosed Ownership12,503 shares
Latest Disclosed Value $ 4,136,380
Captrust Financial Advisors reports 5.67% decrease in ownership of DUL / Alnylam Pharmaceuticals, Inc.

On May 14, 2026 - Captrust Financial Advisors filed a 13F-HR form disclosing ownership of 12,503 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $3,572,107 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,255 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of -5.67% during the quarter. The current value of the position is $3,148,255 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 12,503 -752 -5.67 4,136 -21.52 0.0071
2026-02-17 2025-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 13,255 5,586 72.84 5,271 50.74 0.0100
2025-11-19 2025-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 7,669 4,163 118.74 3,497 205.86 0.0071
2025-08-15 2025-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 3,506 -2,875 -45.06 1,143 -33.66 0.0026
2025-05-15 2025-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 6,381 -33 -0.51 1,723 14.18 0.0043
2025-02-14 2024-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 6,414 1,581 32.71 1,509 13.54 0.0043
2024-11-14 2024-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 4,833 1,237 34.40 1,329 52.23 0.0039
2024-08-15 2024-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 3,596 -43 -1.18 874 60.77 0.0028
2024-05-15 2024-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 3,639 -975 -21.13 544 -38.51 0.0020
2024-02-14 2023-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 4,614 427 10.20 883 19.16 0.0030
2023-11-15 2023-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 4,187 -734 -14.92 742 -20.66 0.0028
2023-08-15 2023-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 4,921 2,736 125.22 935 113.73 0.0037
2023-05-15 2023-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 2,185 570 35.29 438 14.10 0.0019
2023-02-15 2022-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Stock 02043Q107 1,615 140 9.49 384 29.83 0.0019
2022-11-16 2022-09-30 13F ALNYLAM PHARMACEUTICALS INC COM ETF 02043Q107 1,475 190 14.79 295 57.75 0.0017
2022-08-23 2022-06-30 13F/A-1 ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 1,285 53 4.30 187 -6.97 0.0012
2022-08-16 2022-06-30 13F ALNYLAM PHARMACEUTICALS INC COM COM 02043Q107 1,473 241 215 0.0016
2022-05-16 2022-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,232 329 36.43 201 31.37 0.0013
2022-02-14 2021-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 903 50 5.86 153 -4.97 0.0010
2021-11-16 2021-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 853 151 21.51 161 35.29 0.0013
2021-08-16 2021-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 702 36 5.41 119 26.60 0.0011
2021-05-17 2021-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 666 503 308.59 94 347.62 0.0010
2021-02-16 2020-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 163 -60 -26.91 21 -34.37 0.0003
2020-11-17 2020-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 223 0 0.00 32 -3.03 0.0005
2020-08-14 2020-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 223 223 33 0.0005
2020-02-14 2019-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 0 -883 -100.00 0 -100.00
2019-11-14 2019-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 883 733 488.67 71 545.45 0.0025
2019-08-13 2019-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 11 -21.43 0.0004
2019-05-15 2019-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 14 27.27 0.0006
2019-02-13 2018-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 11 -15.38 0.0006
2018-11-15 2018-09-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 13 -13.33 0.0006
2018-08-13 2018-06-30 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 15 0.00 0.0008
2018-05-15 2018-03-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 15 -21.05 0.0009
2018-02-14 2017-12-31 13F ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 0 0.00 19 5.56 0.0011
2018-02-16 2017-09-30 13F/A-1 ALNYLAM PHARMACEUTICALS INC COM Common Stock 02043Q107 150 150 18 0.0014
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.